SecuriTricks - CVE-2025-53022

Description

TrustedFirmware-M (aka Trusted Firmware for M profile Arm CPUs) before 2.1.3 and 2.2.x before 2.2.1 lacks length validation during a firmware upgrade. While processing a new image, the Firmware Upgrade (FWU) module does not validate the length field of the Type-Length-Value (TLV) structure for dependent components against the maximum allowed size. If the length specified in the TLV exceeds the size of the buffer allocated on the stack, the FWU module will overwrite the buffer (and potentially other stack data) with the TLV's value content. An attacker could exploit this by crafting a malicious TLV entry in the unprotected section of the MCUBoot upgrade image. By setting the length field to exceed the expected structure size, the attacker can manipulate the stack memory of the system during the upgrade process.

Product(s) Impacted

Vendor	Product	Versions
Trustedfirmware	Trusted Firmware	*

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-121

Stack-based Buffer Overflow

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	trustedfirmware	trusted_firmware	/	2.1.3	/	/	/	/	/	/
a	trustedfirmware	trusted_firmware	/	2.2.0	/	/	/	/	/	/

References

https://git.trustedfirmware.org/plugins/gitiles/TF-M/trusted-firmware-m.git/+/refs/heads/main/secure_fw/partitions/firmware_update/bootloader/mcuboot/tfm_mcuboot_fwu.c#257

https://trustedfirmware-m.readthedocs.io/en/latest/security/security_advisories/fwu_tlv_payload_out_of_bounds_vulnerability.html

https://www.trustedfirmware.org/projects/tf-m/

CVSS Score

8.6 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: LOW
Availability Impact: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

View Vector String

Timeline

Published: July 30, 2025, 8:15 p.m.
Last Modified: July 31, 2025, 6:42 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

cve@mitre.org

CVE-2025-53022